SIPs and cold-climate 5-10-20-40-60 rule
Last Post 20 Jan 2021 03:06 AM by cmkavala. 3 Replies.
Printer Friendly
Sort:
PrevPrev NextNext
You are not authorized to post a reply.
Author Messages
SIPinterestedUser is Offline
New Member
New Member
Send Private Message
Posts:2

--
08 Nov 2020 11:53 PM
I have been seeing the advice for "cold-climate builders in North America is the 5- 10-20-40-60 rule developed by the Building Science Corporation" R40 seems high for many SIPs without going much wider. I wonder if the cost is worth it? Any expert commentary? Alternately, does external rockwool over SIP, for additional Rvalue, a hydro-phobic extra thermal break, and rain screen make any sense to make the R40 walls? Cost of rockwool vs wider SIPs? I haven't priced anything out, just musing here...
AltonUser is Offline
Veteran Member
Veteran Member
Send Private Message
Posts:2157

--
09 Nov 2020 01:15 AM
What kind of SIPs are you considering? For example, steel skins with polyurethane core or steel skins with Expanded Polystyrene (EPS) or OSB skins with polyurethane core or OSB skins with EPS or fiber cement skins, etc. Since I have used metal SIPs with polyurethane cores in south central, I am just curious what you are considering for your area.
Residential Designer &
Construction Technology Consultant -- E-mail: Alton at Auburn dot Edu Use email format with @ and period .
334 826-3979
SIPinterestedUser is Offline
New Member
New Member
Send Private Message
Posts:2

--
09 Nov 2020 04:20 AM
I haven't previously seriously considered metal skinned, although I see them a lot on this site (just joined). So OSB+EPS or PUR was the original thought. And I'd heard concerns about foam+osb+foam sandwich so thought mineral wool externally.
cmkavalaUser is Offline
Veteran Member
Veteran Member
Send Private Message
Posts:4324
Avatar

--
20 Jan 2021 03:06 AM
Rockwool SIPs are not structural
Posted By SIPinterested on 08 Nov 2020 11:53 PM
I have been seeing the advice for "cold-climate builders in North America is the 5- 10-20-40-60 rule developed by the Building Science Corporation" R40 seems high for many SIPs without going much wider. I wonder if the cost is worth it? Any expert commentary? Alternately, does external rockwool over SIP, for additional Rvalue, a hydro-phobic extra thermal break, and rain screen make any sense to make the R40 walls? Cost of rockwool vs wider SIPs? I haven't priced anything out, just musing here...


Chris Kavala<br>[email protected]<br>1-877-321-SIPS<br />
You are not authorized to post a reply.

Active Forums 4.1
Membership Membership: Latest New User Latest: hudson2000 New Today New Today: 0 New Yesterday New Yesterday: 2 User Count Overall: 34707
People Online People Online: Visitors Visitors: 107 Members Members: 0 Total Total: 107
Copyright 2011 by BuildCentral, Inc.   Terms Of Use  Privacy Statement